Discovery of a 2 Kpc Binary Quasar

(2) UCSD; (3) U. Florida); E. A. Beaver (2); E. M. Burbidge (2); F. Hamann (3); G. A. Shields (1); R. D. Cohen (2); R. W. Lyons (2) ((1) U. Texas; V. Junkkarinen (2)

arxiv: astro-ph/0104236 · v1 · submitted 2001-04-13 · 🌌 astro-ph

Discovery of a 2 Kpc Binary Quasar

G. A. Shields (1) , V. Junkkarinen (2) , E. A. Beaver (2) , E. M. Burbidge (2) , R. D. Cohen (2) , F. Hamann (3) , R. W. Lyons (2) ((1) U. Texas , (2) UCSD

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(3) U. Florida)

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keywords binaryblackholeslbqsquasarseparationarcsecchance

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LBQS 0103$-$2753 is a binary quasar with a separation of only 0.3 arcsec. The projected spacing of 2.3 kpc at the distance of the source (z = 0.848) is much smaller than that of any other known binary QSO. The binary nature is demonstrated by the very different spectra of the two components and the low probability of a chance pairing. LBQS 0103$-$2753 presumably is a galaxy merger with a small physical separation between the two supermassive black holes. Such objects may provide important constraints on the evolution of binary black holes and the fueling of AGN.

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Discovery of a 2 Kpc Binary Quasar

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